Ignition coil

Voltron (DuPont) is a wire enamel in which nanoparticles of silicates or other inorganic materials are chemically linked to the enamel polymer backbone. Voltron provides a much better corona resistance than enamels merely filled with inorganic ingredients. One of the first ignition coils to use Voltron is for road-course and circle-track racing of modified stock cars. 

In diagram 5 you left out the ignition coil, it shows 110V ac going to the plug, in the text you mention using the coil. 

Pushing 110V AC on a 12V DC Pulse automotive ignition coil causes some problems ... 

Arc-Over- If your spark plug dies, becomes open, then you will be shorting the high voltage at the top of the ignition coil to ground. Path of least resistance. 

Why not change the rotor over to 12v dc, then use 12v dc relay It seems it would work better if you have 1 coil for each spark plug - ignition coil would stay cooler. (Auto Zone cheap coil 10.00). 

This system needs blocking diodes both ways. s1r9a9m9 s inverter with it s rectifier bridge is different. I m not 100% sure, but it may need a blocking diode in series with the ignition coil. 

I m using an old Chevy 20,000 volt ignition coil pulsed by a 555 20 Hz 50% duty. This is Just talking about the HV spark. Power source is a 12 volt 8-battery bank. Switching is done by an IRG4P254S IGBT. 

This does make sense. I will have to try it myself. Do you get two 110V AC inverter arcs or two ignition coil arcs ... 

I soldered two wires to the Photoflash cap terminals and connected it to the diode-spark plug circuit. As a trigger I used just an ignition coil connected to 12V battery through a switch. Ignition is manual by closing and opening the switch. 

The easiest way of course is to use a small single cylinder engine and use a single-shot plasma discharge system. For example with manually controlled ignition coil or other HV source and pulse capacitor discharge from the flash unit of a disposable camera. 

I have been wondering why s1r9a9m9 s diodes inside the relays don t break as they were spec d at 600V or so, while the ignition coil produces a lot higher voltages (10-30kV). 

Could the answer be so simple, that the spark plug does not allow the voltage to rise to very high levels, as the air in the gap breaks down well before the ignition coil reaches is highest open circuit voltage. 

I tested the plasma ignition system in my 6.5hp 4-stroke engine with gasoline and propane (didn t test water yet). I used HV pulses from the original ignition coil as trigger or pilot sparks. I had to reverse the polarities of the bridge rectifier, two diodes and the capacitor to get a better pilot spark. The schematic and details are ... 

Slr-Tero plasma spark plug system for a single-cylinder engine using the original ignition coil... 

There s a very simple explanation why the spark plug receives a negative HV pulse. In a points-ignition you first make the contact (current starts flowing from the battery to the ignition coil primary) and then after what s called dwell time the contact is broken. The spark is formed when the contact is broken. 

Also note that when you invert DC to AC, as the AC volts go up the available amps go down on a normal system (110v 6 A = 220v 3 A). Inverters also control the frequency (50-60 Hz or cycles per second for AC) and that DC through the ignition coil is coming out in KILO-Hz. Simply you cannot mix DC and DC currents direct without drastic results, BUT you can mix DC-to-AC by piggybacking. 

The problem with Sir s design was that the relay was not acting as a relay but was acting more like an open pulsed DC circuit which merely allowed the HV spikes from the ignition coil to piggyback onto the IIOv higher amp circuit to the plugs. This created a plasma arc very similar to that used by arc welders but in short duration pulses. 

Option 3 The switching transistor is done away with and current is sourced from the electronic ignition circuit ( brain box ) and passed directly to both the ignition coil and the transformer. This simplifies the wiring but may possibly halve the total amount of power sent to both. The effect of extra current demand through the brain box to power both coils is unknown. There is the danger of frying the brain circuitry. 

Fig. 3 Flame housing of IL 943 flame photometer a) sodium filter, 589 nm b) potassium filter, 776 run c) lithium filter, 670 nm d) cesium filter, 852 nm e) ignition detector f) burner assembly g) rubber gasket h) spark electrode i) ignition coil wire j) chimney. (Courtesy of Instrumentation Laboratory, Inc.)...

The low level of shrinkage resulting from epoxy resin crosslinking results in the narrowest possible dimensional tolerances. In combination with optimum electrical properties, this makes the material suitable for applications such as printed circuit boards, plug-in connections, ignition distributors, ignition coil covers, sparkplug sockets, power switch rods, etc. 

Fig. 3.38 Electric igniter of the USSR calorimeter 1 radiator plate 2 gas burner 3 electric igniter coil 4 frame for the china pipe 5 specimen ...

Ignition coil Glass-reinforced, FR stability Electrical strength, high HDT... 

Ignition coil housing Glass-reinforced, FR Heat resistance, electrical property... 

Ignition coil, 105 Illegal radio, 183, 206 Imaginary numbers, 102 Impedance, 101, 118 formula, 125 mismatch, 213... 

---